高中英语选修七Unit2 Robots Period 3教案 4页

Period 3　Grammar 设计者　邵宁宁 Teaching aims　　　 ‎ ‎1．Revise the passive voice(including the infinitive) and know the exact meaning of the structure.‎ ‎2．Be able to use the useful words，expressions and structures correctly.‎ Teaching procedures　　　‎ Step 1　Revision Ask students to answer the following questions without referring to the textbook.‎ ‎1．What was going to be tested out by Larry's wife，Claire?‎ ‎2．How did Larry Belmont finally persuade his wife to accept the experiment?‎ ‎3．How did Claire feel when she was offered sympathy by a robot?‎ ‎4．What did Tony expect to do about the house before he was to leave and Larry was to return?‎ ‎5．How did Claire feel when she was envied by those women?‎ ‎6．What happened to Tony at last?‎ Suggested answers：‎ ‎1．The robot was going to be tested out by Larry's wife，Claire.‎ ‎2．Larry persuaded her that the robot wouldn't harm her or allow her to be harmed. ‎ ‎3．She thought it was ridiculous to be offered sympathy by a robot.‎ ‎4．Tony expected the house to be completely transformed.‎ ‎5．She felt it a sweet victory to be envied by those women.‎ ‎6．Tony had to be rebuilt.‎ Step 2　Grammar learning ‎1．不定式的被动形式 当不定式与逻辑主语之间是被动关系时，即不定式的逻辑主语是不定式所表示动作的承受者，不定式一般要用被动形式。其被动式可以分为两种：一般式和完成式。‎ ‎(1)一般式：to be done，表示不定式动作在谓语动词之后或者同时发生。‎ It is a great honor_to_be_invited_to speak here.‎ 很荣幸被邀请在这里讲话。‎ The novel is said_to_be_published_next month.‎ 据说这本小说下月要出版。‎ ‎(2)完成式：to have been done，表示不定式动作发生在谓语动词之前。‎ The book is said to_have_been_translated_into six languages.‎ 这本书据说已经被翻译成六种语言。‎ The boss preferred_to_have_been_given_more work to do.‎ 老板宁愿被分给更多的工作做。‎ 被动 一般式 to be done 完成式 to have been done ‎　　2.不定式被动形式的作用 ‎(1)作主语 It's an honor to_be_invited to the ceremony.‎ 很荣幸被邀请赴宴。‎ It's a pity to_be_kept in the house in such fine weather.‎ 在这样好的天气被关在家里真是遗憾。‎ ‎(2)作表语 The letter is_to_be_sent_by airmail.‎ 这封信笺要空邮。‎ ‎(3)作宾语 She didn't like to_be_treated as a child.‎ 她不喜欢被当成孩子。‎ The boy asked to_be_given an opportunity to try again.‎ 那男孩要求给他再试一次的机会。‎ ‎(4)作宾语补足语 I'd like my bedroom to_be_cleaned.‎ 我想整理一下我的卧室。 ‎ ‎(5)作定语 He was the last one_to_be_asked to speak at the meeting.‎ 他是最后一个在会上被邀请发言的人。‎ ‎(6)作状语 His mother left the small village，never_to_be_seen again.‎ 他母亲离开了那个小山村，再也没有人见过她。‎ ‎3．不定式有些要注意的地方 ‎(1)感官动词和一些使役动词的不定式的主动形式要省去to，但在变成被动语态后需要加上to，能这样用的动词或动词词组有：make，have，let，see，hear，notice，listen to，watch等。如：‎ We often see him act like that.＝He is often seen to act like that.‎ 我们常常看到他那样做。‎ ‎(2)在can't help but，have nothing to do but结构中，介词but后的不定式省去to。如：‎ I can't_help_but suspect his motive.‎ 我不禁怀疑起他的动机。‎ I have_nothing_to_do_but_watch TV.‎ 我没什么事情可做，除了看电视。‎ ‎(3)不定式有时要用主动形式表示被动意义 ‎①形容词以及含有形容词的名词后的不定式，一般用主动形式表示被动意义，其中形容词常见的有easy，difficult，important，impossible等。如：‎ The work is impossible_to_finish in two days.‎ 工作不可能两天之内完成。 ‎ English is not so easy_to_learn.‎ 英语并不好学。‎ ‎②一些固定用法，如“挨骂，受责备，受批评” 用be to blame；“(东西等)出租”用to let。‎ He is to blame for what he has done.‎ 他应为他所做的受责备。‎ The house is to let.房子要出租。‎ Step 3　Exercises ‎1．The crowd cheered wildly at the sight of Liu Xiang，who was reported ______ the world record in the 110－meter hurdle race.‎ A．breaking　　　 B．having broken　　　‎ C．to have broken　　　 D．to break ‎2．I like getting up very early in summer.The morning air is so good ______.‎ A．to be breathed　 　 B．to breathe ‎ C．breathing　 D．being breathed ‎3．______ the project as planned，we'll have to work two more hours a day.‎ A．Completing　 B．Complete ‎ C．Completed　 D．To complete ‎4．Having a trip abroad is certainly good for the old couple，but it remains______ whether they will enjoy it.‎ A．to see　 B．to be seen ‎ C．seeing　 D．seen ‎5．I hurried to the meeting hall，only______ that the meeting had been put off.‎ A．to tell　 B．to be told ‎ C．telling　 D．told ‎6．Do let your mother know all the truth；she appears______ everything.‎ A．to tell　 B．to be told ‎ C．to be telling　 D．to have been told ‎7．Little Tom should love______ to the theater this evening.‎ A．to be taken　 B．to take ‎ C．being taken　 D．taking ‎8．It is said that plastics can be used to______ many things.Now people are used to______ plastics products.‎ A．make；using B．making；using ‎ C．making；use D．make；use ‎9．With a lot of problems______，the newly－elected president is having a hard time.‎ A．settled　 B．settling C．to settle　 D．being settled Keys：1～5 CBDBB　6～9 DAAC ‎ Step 4　Drilling Ask students to do Exercise 1 on Page 14 and then check the answers together.‎ Keys：‎ Exercise 1‎ be tested out，be harmed，be offered，was amazed，was not allowed，be discovered，be completely transformed，were impressed，be envied，be rebuilt Ask students to do Exercise 2 and then check the answers together.‎ Keys：‎ Exercise 2‎ ‎1．to be designed　2.to be rebuilt　3.to be accompanied　4.to be known as　5.to be filled with　6.to be tested out　7.to be envied　8.to be set aside Step 5　Using the passive infinitive Translate the following sentences into English using the passive infinitive.‎ ‎1．那本关于《圣经》的书需要在这个周末之前还给图书馆。‎ ‎2．下周末前，这个旧扶手椅将由一个沙发代替。‎ ‎3．不要着急，你有足够的时间把那个传真发到你的公司。‎ ‎4．你同妻子离婚的决定必须要得到她的同意。‎ ‎5．刚刚出了一起事故，不过没有必要惊慌，没有人受伤。‎ ‎6．虽然她考得不错，但是她预料父母还是会对考试的结果感到失望。‎ ‎7．当在医院进行大手术的时候，她得到了家人的关爱和支持，为此她感到非常高兴。‎ ‎8．他为自己被宣布成为智力竞赛冠军得主的事感到十分兴奋。‎ ‎9．他把他们已经得到的2000元与将提供的1500元加在一起，总共3500元。‎ ‎10．没有主力队员的参与，他们一定会在即将到来的比赛中被打败。 ‎ Suggested answers：‎ ‎1．That book on the Holy Bible needs to be returned to the library by/before the end of the week.‎ ‎2．That old armchair is to be replaced by a sofa next week.‎ ‎3．Don't worry—you still have plenty of time for that fax to be sent to your company.‎ ‎4．Your decision to divorce your wife has to be made with her agreement.‎ ‎5．There has been an accident but there is no need to be alarmed.Nobody has been hurt.‎ ‎6．Although she had done well，she expected her parents to be disappointed by her exam results.‎ ‎7．She was happy to be supported by the affection of her family when she had a serious operation in hospital.‎ ‎8．He was so excited to be declared the winner of the talent competition.‎ ‎9．He added the 2000 yuan they had received to the 1500 yuan to be offered，making 3500 yuan in all.‎ ‎10．Without their key/leading player，they're bound to be beaten in the coming competition.‎ Step 6　Homework Finish off Exercises 1 and 2 on Page 56.‎